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Pratt & Whitney R-1830 Twin Wasp Aircraft Engine

The Pratt & Whitney R-1830 Twin Wasp is a thirty Litre 14 cylinder twin-row air-cooled aero engine designed in the early 1930's and first run in 1932. The R-1830 Twin Wasp proved to be very reliable and easy to maintain, the engine powered numerous WW2 aircraft, there are instances of aircraft losing a cylinder completely in action and still managing to fly back to base.

Pratt & Whitney R-1830 Twin Wasp Aircraft Engine

 

W2 dramatically increased the need for aero-engines and the use of the Pratt & Whitney R-1830 Twin Wasp in fighters, transports, bombers and even flying boats, resulted in a total production of 173,618 Pratt & Whitney R-1830 Twin Wasp's being produced. Numerous variants of the engine were produced with power outputs between 600 and 1,200 Hp.

Aircraft that were powered by the Pratt & Whitney R-1830 Twin Wasp

Bristol BeaufortBloch MB.176Burnelli CBY-3
CAC BoomerangCAC WoomeraConsolidated B-24 Liberator
Consolidated PBY CatalinaConsolidated PB2Y CoronadoConsolidated PB4Y Privateer
Curtiss P-36 HawkDouglas C-47 SkytrainDouglas DC-3
Douglas DB-7Douglas SBD DauntlessDouglas TBD Devastator
FFVS J 22Fokker D.XXIGrumman F4F Wildcat
Lior et Olivier LeO 453Lisunov Li-3Martin Maryland
Republic P-43 LancerSaab 17Saab 18
Short Sunderland VSeversky P-35Vickers Wellington IV
VL MyrskyVultee P-66 VanguardDouglas C-47 Dakota

Pratt & Whitney R-1830-S1C-G Twin Wasp Specifications:

  • Type: Fourteen cylinder twin-row OHV supercharged air-cooled radial engine

  • Bore: 5.5 in (139.7 mm)

  • Stroke: 5.5 in (139.7 mm)

  • Displacement: 1,829.4 in (30 litre)

  • Length: 59.06 in (1,500 mm)

  • Diameter: 48.03 in (1,220 mm)

  • Dry weight: 1,250 lb (567 kg)

  • Supercharger: Single-speed General Electric centrifugal type supercharger, 7.15:1 reduction

  • Fuel system: Two-barrel Stromberg carburettor

  • Fuel type: 95-100 octane rating gasoline

  • Reduction gear: Epicyclic gearing, 2:3

 

Pratt & Whitney R-1830-S1C-G Twin Wasp Power output:

  • 1,200 hp (895 kW) at 2,700 rpm for takeoff

  • 700 hp (522 kW) at 2,325 rpm cruise power at 13,120 ft (4,000 m)

  • Specific power: 0.66 hp/in (29.83 kW/l)

  • Compression ratio: 6.7:1

  • Specific fuel consumption: 0.49 lb/(hph) (295 g/(kWh))

  • Power-to-weight ratio: 0.96 hp/lb (1.58 kW/kg)

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    Pratt & Whitney R-1830 Twin Wasp Aircraft Engine


     
    Pratt & Whitney R-1830 Twin Wasp Aircraft Engine
     

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